[detype1] Fix exit code for known options (#536)

Partial fix for #347

c/detype1/source/detype1.c

@@ -534,8 +534,7 @@ static void detype1(FILE *fp1, FILE *fp2) {
  */
 
 static void usage(void) {
-    fprintf(stderr, "usage: detype1 [font [text]]\n");
-    exit(1);
+    printf("usage: detype1 [font [text]]\n");
 }
 
 #ifndef _MSC_VER /* unix */
@@ -593,10 +592,14 @@ int getopt(int argc, char **argv, char *opstring) {
 
 int main(int argc, char *argv[]) {
     int c;
-    while ((c = getopt(argc, argv, "?uh")) != EOF)
+    while ((c = getopt(argc, argv, "h")) != EOF)
         switch (c) {
+            case 'h':
+                usage();
+                exit(0);
             default:
                 usage();
+                exit(1);
         }
     if (optind == argc) {
 #if _MSC_VER
@@ -635,5 +638,6 @@ int main(int argc, char *argv[]) {
         fclose(fp2);
     } else
         usage();
+        return 1;
     return 0;
 }

tests/detype1_test.py

@@ -1,6 +1,9 @@
 from __future__ import print_function, division, absolute_import
 
 import os
+import platform
+import pytest
+import subprocess32 as subprocess
 
 from .runner import main as runner
 from .differ import main as differ
@@ -18,6 +21,24 @@ def _get_expected_path(file_name):
 # Tests
 # -----
 
+@pytest.mark.parametrize('arg', ['-h'])
+def test_exit_known_option(arg):
+    if platform.system() == 'Windows':
+        tool_name = TOOL + '.exe'
+    else:
+        tool_name = TOOL
+    assert subprocess.call([tool_name, arg]) == 0
+
+
+@pytest.mark.parametrize('arg', ['-v', '-u'])
+def test_exit_unknown_option(arg):
+    if platform.system() == 'Windows':
+        tool_name = TOOL + '.exe'
+    else:
+        tool_name = TOOL
+    assert subprocess.call([tool_name, arg]) == 1
+
+
 def test_run_on_pfa_data():
     actual_path = runner(['-t', TOOL, '-f', 'type1.pfa'])
     expected_path = _get_expected_path('type1.txt')

tests/runner.py

@@ -17,7 +17,7 @@
 import sys
 import tempfile
 
-__version__ = '0.5.2'
+__version__ = '0.5.3'
 
 logger = logging.getLogger('runner')
 
@@ -108,7 +108,7 @@ def _check_tool(tool_name):
     # https://github.com/adobe-type-tools/afdko/issues/347
     # https://github.com/adobe-type-tools/afdko/issues/348
     if tool_name.split('.')[0] in ('sfntdiff', 'sfntedit', 'makeotfexe',
-                                   'type1', 'detype1'):
+                                   'type1'):
         return tool_name
     # XXX end hack
     try:

tests/runner_test.py

@@ -1,13 +1,28 @@
 from __future__ import print_function, division, absolute_import
 
+import platform
 import pytest
 import subprocess32 as subprocess
 
 from .runner import main as runner
+from .runner import _check_tool
 
 
 def test_bad_tx_cmd():
     # Trigger a fatal error from a command line tool, to make sure
     # it is handled correctly.
     with pytest.raises(subprocess.CalledProcessError):
         runner(['-t', 'tx', '-n', '-o', 'bad_opt'])
+
+
+@pytest.mark.parametrize('tool_name', ['not_a_tool'])
+def test_check_tool_error(tool_name):
+    assert isinstance(_check_tool(tool_name), tuple)
+
+
+@pytest.mark.parametrize('tool_name', ['detype1'])
+def test_check_tool_unhacked(tool_name):
+    expected_name = tool_name
+    if platform.system() == 'Windows':
+        expected_name += '.exe'
+    assert _check_tool(tool_name) == expected_name